In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 25, No. 17 ( 2023), p. 6694-6703
Abstract:
Ultrahigh hydrogen evolution from photocatalytic water splitting using CaTiO 3 is difficult due to its low photon-to-electron conversion efficiency. Herein, a facile post-loading strategy was developed for preparing a RuS 2 @CaTiO 3 - x heterojunction by anchoring RuS 2 on a multi-shelled hollow cube of CaTiO 3 , which successfully achieved ultrahigh hydrogen evolution through water splitting with the assistance of a photocatalytic biorefinery. After RuS 2 anchoring, the utilization of visible light and the separation/migration rate of photo-generated carriers of RuS 2 @CaTiO 3 - x enhanced significantly, resulting in a high photon-to-electron conversion efficiency. Correspondingly, the hydrogen evolution rate reached 8140.7 μmol g −1 h −1 in the RuS 2 @CaTiO 3 -10 system with the assistance of the photocatalytic selective oxidation of biomass-derived monosaccharides, and it was 45.5- and 4.2-fold greater than those of pristine CaTiO 3 and RuS 2 , respectively. Furthermore, 89.0% yield of lactic acid was obtained in the corresponding system. Electron spin-resonance (ESR) characterization combined with radical capture experiments indicated that ˙OH played a significant role in lactic acid production. Moreover, RuS 2 @CaTiO 3 -10 not only exhibits excellent reusability and stability, but also has been successfully used for different biomass-based monosaccharide reforming coupled with water-splitting to co-produce lactic acid and hydrogen. This work sheds light on the development and design of photocatalytic systems.
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
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